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https://issues.apache.org/jira/browse/FLINK-3740?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15239030#comment-15239030
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ASF GitHub Bot commented on FLINK-3740:
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GitHub user aljoscha opened a pull request:
https://github.com/apache/flink/pull/1878
[FLINK-3740] Make Session Window State Checkpointed
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/aljoscha/flink window-snapshot-test
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/1878.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #1878
----
commit 419d3bd53826d0dd0c40c2eaad83675eb4e14a5a
Author: Aljoscha Krettek <[email protected]>
Date: 2016-04-12T14:27:18Z
[FLINK-3740] Make Session Window State Checkpointed
----
> Session Window State is Not Checkpointed
> ----------------------------------------
>
> Key: FLINK-3740
> URL: https://issues.apache.org/jira/browse/FLINK-3740
> Project: Flink
> Issue Type: Bug
> Components: Streaming
> Reporter: Aljoscha Krettek
> Assignee: Aljoscha Krettek
>
> The merging window state in the {{WindowOperator}} is not checkpointed. This
> means that programs containing session windows will fail upon restore after a
> failure.
> I propose adding a simulated snapshot/restore cycle to the tests in
> {{WindowOperatorTest}} to catch these problems in the future.
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